Improvement in carriage-wheels



C. ANDEREGG.

Improvement in Carriage-Wheels.

N0.129,449, Patented July 16, 1872.

Wituzsm: gunman: lZ Z) W/- gttnruega.

PATENT QFFICE.

CHRISTIAN ANDEREGG, OF LAWBENOEBURG, INDIANA.

IMPROVEMENT IN CARRIAGE-WHEELS.

Specification forming part of Letters Patent No. 129,449, dated July 16, 1872.

Specification describing a new and useful Improvement in Wheels, invented by CHRIS- TI-AN ANDEREGG, of Lawrenceburg, in the county of Dearborn and State of Indiana.

This invention relates to the construction of wagon and carriage-wheels; and consists in the construction of the spoke-tenon and the arrangement of the mortises in the hub, as hereinafter described.

In the accompanying drawing, Figure 1 represents a longitudinal section of the hub, showing the arrangement of the spokes therein. Fig. 2 is a sectional view of the hub, showing the mortises. Fig. 3 is a view in perspective, showing one of the spokes detached and mode of forming the tenon and shoulders thereon.

Similar letters of reference indicate corresponding parts.

Arepresents the hub, and B the spokes. O are the mortises, and D the tenons. The mortise in the hub is made in two parts; the outer part 0 receives nearly the full size of the spoke, and extends into the hub one-fourth (more or less) of the length of the mortise. The other part, f, extends through to the center or box, and receives the tenon D of the spoke. The shoulders h, therefore, of the spoke rest on the bottom of the outer mortise when the spoke is driven, The shoulder h on the sides and one edge of the spoke are on the same plane and rest on the same level surface 0 of the outer mortise. The mortises are made between the parallel lines around the hub, and are reversed, as seen in Fig. 2, so as to alternate the edge shoulder of the spokes. On the sides of the spoke, at the surface of the hub, I make slight shoulders of about one-sixteenth of an inch, as indicated by the line j, Fig. 1. The

' spokes are driven to. tightly fill the mortise,

both the outer and the inner part. By the outer portion of the mortise the butt of the spoke is supported, and by the arrangement of the mortises in the hub, and the form of the spoke-tenon and the manner in which the spokes are supported, the wheel is given a degree of strength and elasticity unattained in any other wheel.

I will state the practical difference be shoulder from the pressure.

tween the wheel patented by me January 2, 1872, and the present one. First, by placing the edge shoulder of the upper mortise on a level with the side shoulders, I get double the bearing on the edge of the spoke from the shoulder of mortise to the surface of the hub. Second, by alternately placing the edge shoulders on back and front of mortise the lower mortise becomes staggered. Third, the spokes stand bracing against each other.

Fourth, the wood of side shoulders of mortise will give, but the end wood of edge shoulders will not, thereby relieving the wood between mortises of strain. Fifth, the hub is strengthened by placing the edge shoulders alternately I in front and back of mortise, thereby shortening the space between shoulders; and, when the spoke is driven, there is, in addition to the wood between mortises, a shoulder which is equal to that much solid timber. Sixth, the lower tenon being fitted very tight, (which I can do in the lower mortise without bursting thehub,) the mortises become somewhat smaller at the end where there is no edge Thus, when the last spoke is driven, it is the key-spoke combining them altogether, forming a solid arch of wood and glue within the hub, the wood between mortises (comparatively speaking) performing the function only of soldering the hub together.

Having thus described my invention, I claim as new and desire to secure by Letters Patent- 1. The double mortises 0, arranged in the hub, substantially as shown and described.

2..The side and edge shoulders h of the spoke, arranged as shown and described.

3. The combination of the spoke B (when the tenon-shoulders are made as described) with the mortises 0,, when the latter are made and arranged as shown and described, and for' the purpose set forth.

CHRISTIAN ANDEREGG.

Witnesses E. R. DOBELL, VAL BECKER. 

